Most refunds are released within 21 days, while some may take a little bit longer. To track your refund, please go to the "Where's My Refund" tool, located at https://www.irs.gov/refunds. It follows your tax return from receipt to completion. It will tell you when your return is in received status and if your refund is in approved or sent status.
For more information please click the link below.
https://ttlc.intuit.com/replies/5340655
Only the IRS controls when and if a Federal tax refund is Approved and Issued.
The dates for receiving a tax refund after it has been accepted by the IRS are only estimates based on the IRS target of issuing a tax refund after 21 days from the date it was accepted by the IRS. This is a target only and not a guarantee.
After the tax return has been Accepted by the IRS (meaning only that they received the return) it will be in the Processing mode until the tax refund has been Approved and then an Issue Date will be available on the IRS website.
See this IRS website for federal tax refund FAQ's - https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions
Use this TurboTax website to check the status of an e-filed return and if it was either accepted or rejected - https://turbotax.intuit.com/tax-tools/efile-status-lookup/
If accepted by the IRS use the federal tax refund website to check the refund status - https://www.irs.gov/refunds